• Dwarf Planet Ceres 30.7.2020 • Topographical video of Ceres by Sean Doran from data taken by NASA spacecraft Dawn. Ceres is the largest object in the main asteroid belt that lies between the orbits of Mars and Jupiter. With a diameter of 940 km (580 mi), Ceres is both the largest of the asteroids and the only likely dwarf planet inside Neptune's orbit. It is the 25th-largest body in the Solar System within the orbit of Neptune. Ceres was the first asteroid to be discovered (by Giuseppe Piazzi